應用時間反轉法之觸控面板之定位及力回饋方法TIME-REVERSAL-BASED IMPACT-LOCALIZATION AND HAPTIC-FEEDBACK METHOD FOR TOUCH PANELS

專利類型

發明

專利國別 (專利申請國家)

美國

專利申請案號

13/030,322

專利證號

US 8,803,822 B2

專利獲證名稱

應用時間反轉法之觸控面板之定位及力回饋方法TIME-REVERSAL-BASED IMPACT-LOCALIZATION AND HAPTIC-FEEDBACK METHOD FOR TOUCH PANELS

專利所屬機關 (申請機關)

國立交通大學

獲證日期

2014/08/12

技術說明

本專利提出時間反轉法(time-reversal approach)應用於觸控面板之定位及力(haptic feedback)回饋。彈性平板理論可導出理論脈衝響應(impulse response)，根據脈衝響應及時間反轉法可以精確的求觸控位置，並產生相對應之反轉力回饋於原觸控位置。時間反轉法的主要優點在於處理白頻訊號源(broadband source)及具殘響環境(reverberant environment)。 壓電材料(piezoelectric material)及音圈感應器(voice-coil sensor)應用於實驗中證明了本理論之可行性。 A combined impact localization and haptic feedback system based on time-reversal signal processing is presented in this patent. Theoretical impulse responses are derived from a propagation model of bending waves in a thin elastic plate. On the basis of the impulse responses, the time reversal technique is exploited to spot the impact location as well as to generate haptic feedback. The chief advantage of the time reversal technique lies its robustness of tackling broadband sources in a reverberant environment. Piezoelectric ceramic plates and voice-coil motors are used as sensors for localization, whereas only voice-coil motors are used as the actuator for haptic feedback. Experimental results demonstrated that the proposed system was effective in precise impact localization for a thin panel.

備註

本部(收文號1100065219)同意該校110年10月27日陽明交大研產學字第1100036963號函申請終止維護專利(陽明交大)

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